Matteo Bassini

Unholy Annex // Ritual Chamber

At the beginning of your end step, draw a card. If you control a Demon, each opponent loses 2 life and you gain 2 life. Otherwise, you lose 2 life.
(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

Idol of the Deep King // Sovereign's Macuahuitl

Flash
When Idol of the Deep King enters, it deals 2 damage to any target.
Craft with artifact {2}{R} ({2}{R}, Exile this artifact, Exile another artifact you control or an artifact card from your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)

Sunken Citadel

Sunken Citadel enters the battlefield tapped. As it enters, choose a color.
{T}: Add one mana of the chosen color.
{T}: Add two mana of the chosen color. Spend this mana only to activate abilities of land sources.

Sunken Citadel enters tapped. As it enters, choose a color.
{T}: Add one mana of the chosen color.
{T}: Add two mana of the chosen color. Spend this mana only to activate abilities of land sources.

Forest

Island

Swamp

Waterfront District

Waterfront District enters the battlefield tapped.
{T}: Add {U} or {B}.
{2}{U}{B}, {T}, Sacrifice Waterfront District: Draw a card.

Waterfront District enters tapped.
{T}: Add {U} or {B}.
{2}{U}{B}, {T}, Sacrifice Waterfront District: Draw a card.

Ruin Crab

Landfall — Whenever a land you control enters, each opponent mills three cards. (To mill a card, a player puts the top card of their library into their graveyard.)

Construct

This creature gets +1/+1 for each artifact you control.

Knightly Valor

Enchant creature
When Knightly Valor enters the battlefield, create a 2/2 white Knight creature token with vigilance.
Enchanted creature gets +2/+2 and has vigilance.

Enchant creature
When Knightly Valor enters, create a 2/2 white Knight creature token with vigilance. (Attacking doesn't cause it to tap.)
Enchanted creature gets +2/+2 and has vigilance.

"A glowing spring appeared before her, promising untold wisdom. Still she walked on."
—*The Nameless Knight of Summer*

Leyline of Anticipation

If Leyline of Anticipation is in your opening hand, you may begin the game with it on the battlefield.
You may cast spells as though they had flash.

"'The human world will fall,' whispered the monstrous rat. 'You have but one choice to make: Will you fall with it?'"
—*Song of the Vermin*

Oppression

Whenever a player casts a spell, that player discards a card.

"The troll took the fauns' hesitation as fear and roared in triumph. In truth, they'd seen the ledge begin to crack beneath his weight."
—*The Goose Mother and Other Tales*

Nature's Will

Whenever one or more creatures you control deal combat damage to a player, tap all lands that player controls and untap all lands you control.

Knightly Valor // Knightly Valor

Warren Instigator

Double strike
Whenever Warren Instigator deals damage to an opponent, you may put a Goblin creature card from your hand onto the battlefield.